Leilua is currently on contract with the club until the end of 2022, however, the Concord-based outfit are apparently prepared to grant the 25-year-old an immediate release so he can take up a mega deal with the North Queensland Cowboys.
The second-rower went from strength to strength during the 2021 season in Michael Maguire's side, becoming one of the game's premier second-rowers.
The news comes with Leilua promising to test the open market some weeks ago as one of over 150 players off-contract at the end of 2022 and allowed to negotiate from November 1.
According to The Daily Telegraph, the former Dragon will join the Cowboys on a three-year deal worth around $700,000 per season.
It has previously been reported the Tigers negotiations have left plenty to be desired with Leilua's camp, who is in for a monster pay rise following a breakout patch of form since signing his last deal.
Tim Sheens, who has recently taken up a role as head of football at the Tigers, reportedly told the publication on Wednesday evening that it was a "damn good offer."
“We knew the Cowboys were negotiating,” Sheens said.
“It sounded like a damn good offer. They had money stashed away for Kikau.”
The Tigers are set to release Leilua on Thursday morning if reports are to be believed, with the move to leave a gaping hole at the Tigers for 2022.
The club have signed Isaiah Papali'i from 2023 onwards, but the Eels won't release him early given what they will pay him in 2022.
With very few top line players left for 2022, it means the Tigers may have to rely on the likes of Luke Garner to lead their second-row charge.
One option for the Tigers could be to use the money they will save on Leilua to target Tariq Sims, who doesn't have a future at the Dragons beyond 2022, and has previously been shopped for the upcoming season.
It was thought no clubs had the funds available to secure Sims so soon, however, savings from Leilua, plus the Tigers not being at the end of the salary cap, could potentially reopen those discussions.